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The ATHENA M751802425094 cylinder base gasket is designed for KTM SXF 450, XCF 450 from 2007 to 2012. The base gasket seals between the cylinder and the crankcase. Its thickness matters: it sets the height of the cylinder, and therefore the squish, the compression and, on a two-stroke, the port timing.
Every time the cylinder is removed: a crushed base gasket can't be reused.
Athena, an Italian company founded in 1973 near Vicenza, designs gaskets, pistons and cylinder kits for motorcycles. An OEM supplier to KTM, Ducati, Fantic, Piaggio and Triumph and a partner of the MXGP world championship, it develops its parts on the test bench and on the track with racing teams.
Which thickness should I choose?
The same as your original gasket, unless you are deliberately adjusting the squish.
Should the other gaskets be replaced?
Yes, as soon as the cylinder is removed: a top end gasket kit includes all the gaskets that need replacing.
Check the exact model and year of your bike in the list below before ordering.
Fits:
KTM SXF 450 2012
KTM SXF 450 2011
KTM SXF 450 2010
KTM SXF 450 2009
KTM SXF 450 2008
KTM SXF 450 2007
KTM XCF 450 2009
KTM XCF 450 2008
Click on your bike to see all compatible parts.
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